[MyleAtaraxia]

What

Add interactive SDL/Vulkan dialogs to both libSceMsgDialog variants, replacing automatic completion. Supports keyboard/controller input, custom buttons, progress updates, and selection/cancellation results without blocking game threads.

Remaining limitations are documented in TechnicalDebt.md. System message type 5 is unsupported; full SDK compatibility and common-dialog arbitration remain unverified.

Tested

• Linux: 12 focused tests and packaged PRX checks passed; broader non-AGC run passed 242 tests. The full GPU suite stopped after resource-related kills.
• After rebasing: standard/native dialog state tests passed on macOS. Conventions and whitespace checks passed.

Physical controllers and Windows presentation remain untested.

Checklist

• Based on current main; no overlapping PRs — rebased; overlapping PRs not checked
• One topic per PR
• No code comments added
• Unimplemented paths throw; silent stubs documented — unsupported paths currently return NOT_SUPPORTED
• No investigation files or images added
• No new third-party dependencies
• Generic behavior
• Depends on: none
• AI-assisted: yes

[github-actions]

Other open pull requests touch the same code. Merging one will break the other, or both implement the same thing. If this one builds on them, list them in Depends on.

Pull request	Conflicting files (lines on main)	Same exports	Same new files
#1819	docs/dev/TechnicalDebt.md L354
#1831	docs/dev/TechnicalDebt.md L354
#1873	core/libs/prx/libSceVideoOut/src/VideoOutDriver.cpp L211-212
#1916	docs/dev/TechnicalDebt.md L354
#1931	docs/dev/TechnicalDebt.md L354
#1969	docs/dev/TechnicalDebt.md L354
#2001	core/libs/prx/libSceAgcDriver/Execution/src/Driver/EntryPoints.cpp L112-122 core/libs/prx/libSceMsgDialog.native/Export.cpp L1-90 core/libs/tests/GuestMsgDialogNative.cpp L7-16, L31-61 docs/dev/TechnicalDebt.md L14-16, L345-354
#2052	docs/dev/TechnicalDebt.md L354
#2053	docs/dev/TechnicalDebt.md L354
#2054	docs/dev/TechnicalDebt.md L354

[oneandonlydean]

Closing: no title is shown to need an interactive dialog (the current auto-answer gets titles past sceMsgDialogOpen), and this adds a host UI to VideoOut and the presenter where unsupported cases return NOT_SUPPORTED instead of throwing. Please reopen with the title ID and what it does wrong on main if you find one.